Graphite Fire Draft Seal (Twin Blade), Brand Name : SEALz

SEALz Fire Draft Seal (TB) is a dual performance seal with a double neoprene blade which under normal circumstances enhance the acoustic performance of a fire resisting door through sealing of air gaps between door leaves and frames.  In the event of fire, the intumescent flex reacts and forms a voluminous intumescent foam in selaing the air-gap etween the door leaves and frames of the fire resisiting